package interfacekeyword;

public class InterfaceTest {
    public static void main(String[] args) {
        ComparableCircle c1 = new ComparableCircle();
        ComparableCircle c2 = new ComparableCircle();

        c1.setRadius(1);
        c2.setRadius(2);

        System.out.println(c1.compareTo(c2));
        System.out.println(c2.compareTo(c1));
    }
}
